Information as of October 8, 2026
Public ratings are one of the few outside signals a buyer can check before hiring a Quality of Earnings (QoE) provider. Most firms that do this work have few ratings, or none. This list looks at seven firms that offer QoE to small business buyers and have at least 10 Google reviews, ranked by rating and then by number of reviews.
Among the firms here, Tonnesen Accounting Services has the highest rating with the most reviews: 5.0 stars on 85 Google reviews. Midwest CPA is next at 5.0 on 79.
Ratings at a glance
| Rank | Firm | Rating | Reviews | Published QoE price | Turnaround (as stated) |
| 1 | Tonnesen Accounting Services | 5.0 | 85 | $7,500 flat for SBA-sized deals | 2 to 4 weeks from documents |
| 2 | Midwest CPA | 5.0 | 79 | $12,000 to $23,000+ per deal | 3 to 6 weeks |
| 3 | System Six | 4.9 | 63 | Fixed-fee quote; not published | Not stated |
| 4 | ProSolve CPA | 4.9 | 43 | Fixed-fee quote; not published | About 4 weeks; often 3 |
| 5 | Edler Zain | 4.9 | 27 | Not published | 3 to 4 weeks from complete data |
| 6 | CapForge | 4.8 | 169 | $2,500 to $12,500 (average $5,500) | 10 business days |
| 7 | Cooper CPA Group | 4.7 | 133 | Not published | Not stated |
How the ranking works
Firms are included if their own website offers Quality of Earnings work to small business buyers and their Google Business Profile shows at least 10 reviews. They are ranked by Google rating, then by number of reviews, as shown on October 8, 2026. This is a selection of firms that meet those rules, not every firm in the market. A firm’s rating covers all of its work, so for firms that also do tax, bookkeeping or accounting, many reviews will reflect that work rather than QoE.
1. Tonnesen Accounting Services: 5.0 on 85 reviews
Tonnesen Accounting Services does Quality of Earnings work for business buyers, searchers, independent sponsors and SBA lenders nationwide. It was founded by Josh Tonnesen, CPA, MBA. The firm has completed more than 600 QoE engagements and runs about 40 a month, with the work done and reviewed in-house by a U.S.-based team. It also offers bookkeeping and fractional CFO support as secondary services.
- Price: $7,500 flat for SBA-sized deals; larger deals scoped after a call. See pricing.
- Turnaround: two to four weeks from receipt of documents.
- Scope: ten procedures, including proof of cash, reconciliation to filed tax returns, add-back support and working capital.
- Worth knowing: compare it with national firms and low-cost options on its provider comparison page.
2. Midwest CPA: 5.0 on 79 reviews
Midwest CPA is a virtual CPA firm based in Janesville, Wisconsin, founded in 2022. Its site focuses on acquisition entrepreneurs and also sells monthly accounting and tax packages.
- Price: its pricing page says QoE “typically runs $12,000-$23,000+ per deal, scaled to deal size.”
- Turnaround: its due diligence page puts the process at three to six weeks.
3. System Six: 4.9 on 63 reviews
System Six is a bookkeeping firm based in Seattle that also sells buy-side QoE work, including a lighter QoE option, on a fixed-fee quote. The author of its QoE pricing guide writes that he has paid for QoE reports three times as a buyer.
- Price: not published; quoted per deal.
4. ProSolve CPA: 4.9 on 43 reviews
ProSolve CPA markets buy-side due diligence to searchers. Its QoE page lists proof of cash and reconciliation of tax returns to the financial statements.
- Price: “fixed-fee pricing for all QoE work”; amounts not published.
- Turnaround: “plan for around 4 weeks,” often within three if the company responds quickly.
5. Edler Zain: 4.9 on 27 reviews
Edler Zain is an accounting firm in Rockville, Maryland. Its buy-side QoE lists proof of cash by account and month, adjusted EBITDA reconciled to the company’s add-backs, and a working capital peg. Its site says its reports are prepared to the standards SBA and conventional lenders expect.
- Price: not published.
- Turnaround: “typically three to four weeks from receipt of complete data.”
6. CapForge: 4.8 on 169 reviews
CapForge is based in Carlsbad, California, and its Google profile covers bookkeeping and tax as well as due diligence. Its due diligence work reviews the company’s SDE and add-backs.
- Price: “$2,500 to $12,500 with the average being $5,500.”
- Turnaround: “ten business days” from receipt of the needed documents.
7. Cooper CPA Group: 4.7 on 133 reviews
Cooper CPA Group is a Houston accounting and tax firm that has served the area for more than two decades. It lists Quality of Earnings among its services.
- Price: not published.
What ratings can and cannot tell you
A rating shows how past clients felt about a firm, including whether it hit its timeline and answered their questions. It does not show the scope of a QoE report. Before engaging any firm, ask for a sample report, confirm the report includes a proof of cash and a tax return reconciliation, and ask whether the fee is fixed.
Frequently asked questions
Which QoE provider has the best ratings? Among the firms in this list, Tonnesen Accounting Services: 5.0 stars on 85 Google reviews as of October 8, 2026.
Do many QoE firms have public ratings? Few do. Many firms that focus on QoE have no Google Business Profile or only a handful of reviews.
Does a high rating mean a better QoE? Not by itself. Compare what each report covers, who prepares and reviews it, and whether your lender will accept it.
Ratings and review counts as shown on Google, and prices and turnaround as published on each firm’s website, on October 8, 2026. Details change; check each firm’s current website before you engage.